The Valve,stop-Check, cataloged under National Stock Number 4820-00-265-6958, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-265-6958 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Face Design | RAISED STRAIGHT FIRST END |
| Bolt Circle Nominal Diameter | 6.625 INCHES FIRST END IN |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | FLANGE FIRST END |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.875 INCHES FIRST END IN |
| Operating Pressure | 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | BONNET PACKING |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Second Connection Face to Centerline Distance | 7.000 INCHES IN |
| Nominal Outside Diameter | 8.250 INCHES FIRST END IN |
| Bolt Hole Quantity | 8 FIRST END |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| First Connection Face to Centerline Distance | 7.000 INCHES IN |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 605H | 3/2 Design control — primary reference U.S. Government activity |
| 2847H | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-265-6958 is a Valve,stop-Check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-265-6958: Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: RAISED STRAIGHT FIRST END; Bolt Circle Nominal Diameter: 6.625 INCHES FIRST END IN; Mounting Position: HORIZONTAL OR VERTICAL. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.